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Air Quality Index (AQI) in Laguna, United States 🇺🇸

Air quality in Laguna is currently 61 on the US AQI scale, rated Moderate.

Overcast
12°C
Overcast
AQI INDEX
61
US EPA Standard

PM 2.5 Level
14.2
µg/m³

Air Quality
Moderate
The current Air Quality Index (AQI) in Laguna is recorded at 61 as of 1:58 PM local time this Tuesday, October 20, 2026. This real-time AQI score is estimated from the current PM2.5 concentration. According to the US EPA health standard, air quality in Laguna currently falls into the Moderate category. The PM2.5 pollution levels are currently measured at 14.2 µg/m³. While this AQI level is acceptable for most people, those who are unusually sensitive to air pollution should consider reducing prolonged or heavy exertion outdoors. If you are sensitive to air pollution, check the local weather before heading out. For the AQI across entire United States, you can also view the Air Quality Index for United States covering other major urban centers and local monitoring stations.

Health Recommendations for Laguna Residents

⚠️

Air quality is acceptable. However, for some pollutants there may be a moderate health concern for a very small number of people. Sensitive groups should consider reducing prolonged outdoor exertion.

Laguna Air Pollution: Detailed Pollutant Breakdown

🌿
Good news — Laguna's air today is cleaner than a single cigarette (about 0.6).
Based on the Berkeley Earth estimate that ~22 µg/m³ of PM2.5 over a day is about one cigarette. Today's PM2.5 in Laguna is 14.2 µg/m³.
PM 2.5
14.2
µg/m³
PM 10
17.6
µg/m³
Nitrogen Dioxide (NO2)
26.2
µg/m³
Ozone (O3)
26.0
µg/m³
Carbon Monoxide (CO)
145.0
µg/m³
Sulfur Dioxide (SO2)
1.6
µg/m³

Current Weather in Laguna

🌡️ 12°C (Feels like 11°)
🌬️ 4 km/h WSW
💧 70% Humidity
🧭 1012 hPa
👁️ 10.0 km Visibility
☀️ UV Index: 0.0
🌅 Sunrise: 07:19 AM
🌇 Sunset: 06:20 PM
🌡️ Dew Point: 7°C

Laguna's Main Air Pollutant Today

The main concern in Laguna right now is NO2 at 26.2 µg/m³, about 1.0x the WHO 24-hour guideline.

Air Quality Health Advice for Laguna

General publicAir quality is acceptable for most people. Outdoor activity is fine.
Sensitive groupsUnusually sensitive people should consider easing prolonged or heavy exertion outdoors.

Air Quality in Other Cities in United States

Browse Air Quality in United States by cities in alphabetical order:

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Air Quality in United States ›

Frequently Asked Questions about Air Quality in Laguna

What is the air quality (AQI) in Laguna right now?

The current air quality index in Laguna is 61 — categorised as Moderate.

Is the air in Laguna safe to breathe today?

Today's air quality in Laguna is rated Moderate on the US EPA scale.

What is the PM2.5 level in Laguna right now?

The fine-particle (PM2.5) concentration in Laguna is currently 14.2 µg/m³. PM2.5 is the most health-relevant pollutant — the WHO 24-hour guideline is 15 µg/m³.

What is the PM10 level in Laguna right now?

The coarse-particle (PM10) concentration in Laguna is currently 17.6 µg/m³.

What is the main pollutant in Laguna right now?

The dominant pollutant in Laguna right now is NO2 at 26.2 µg/m³.

Is it safe to exercise outdoors in Laguna today?

With air quality currently rated Moderate, outdoor exercise in Laguna is generally considered safe for most people.

How to Read the Air Quality Index for Laguna

Good (0-50)

Air is fresh and healthy. Safe for all outdoor activities.

Moderate (51-100)

Acceptable air quality, though sensitive groups should monitor comfort.

Unhealthy (Sensitive) (101-150)

Vulnerable groups (children, elderly) should limit outdoor exertion.

Unhealthy (151-200)

Everyone begins to experience health effects. Stay indoors where possible.

Very Unhealthy (201-300)

Significant health impact for entire population. Emergency conditions.

Hazardous (301+)

Serious health alert: everyone may experience serious life-threatening effects.

Good (0-12)

Fine particles are at minimal, safe levels. Air is optimal.

Moderate (12-35)

Acceptable air, but haze may be present in urban areas.

Sensitive (35-55)

Individuals with heart or lung disease should limit activity.

Unhealthy (55-150)

Particulate levels high enough to cause respiratory irritation.

Very Unhealthy (150-250)

Heavy haze. High risk to cardiovascular health for the public.

Hazardous (250+)

Lethal particulate concentrations. Critical neurological and lung risk.

Good (0-54)

Low levels of dust and coarse particles. Environment is safe.

Moderate (55-154)

Coarse particles may trigger coughing in sensitive groups.

Sensitive (155-254)

Visible dust pollution. Sensitive groups should avoid heavy labor.

Unhealthy (255-354)

Widespread respiratory impacts likely for the population.

Very Unhealthy (355-424)

Dangerous dust and debris levels. Significant warnings issued.

Hazardous (425+)

Extremely high concentrations. Stay inside with filtration.

Good (0-54)

Surface ozone levels are within a safe, natural range.

Moderate (55-70)

Acceptable air, but sensitive individuals may feel chest tightness.

Sensitive (71-85)

Rising ozone can trigger airway inflammation in active children.

Unhealthy (86-105)

Avoid heavy outdoor work during the hottest part of the day.

Very Unhealthy (106-200)

Serious lung function reduction likely across the public.

Hazardous (201+)

Emergency ozone levels. Risk of permanent lung tissue damage.

Good (0-53)

Nitrogen levels are optimal. Safe for everyone.

Moderate (54-100)

Typical background levels for high-density urban areas.

Sensitive (101-360)

Increased risk of respiratory infections for vulnerable groups.

Unhealthy (361-649)

Significant airway inflammation likely near traffic zones.

Very Unhealthy (650-1249)

Acute respiratory distress potential. High-risk groups stay indoors.

Hazardous (1250+)

Toxic concentrations. Immediate health precautions required.

Good (0-4.4)

Carbon Monoxide levels are clean and non-toxic.

Moderate (4.5-9.4)

Acceptable; may affect those with specific heart conditions.

Sensitive (9.5-12.4)

Reduced oxygen delivery to the heart may occur.

Unhealthy (12.5-15.4)

Headaches and fatigue may occur in urban canyons.

Very Unhealthy (15.5-30.4)

Significant cardiovascular distress. Mental confusion possible.

Hazardous (30.5+)

Lethal potential. Immediate risk of neurological collapse.

Good (0-35)

Optimal air quality with no sulfur detection.

Moderate (36-75)

Acceptable air; minor odors possible near industry.

Sensitive (76-185)

Bronchoconstriction possible for active asthmatics.

Unhealthy (186-304)

Respiratory distress likely for the wider population.

Very Unhealthy (305-604)

Significant wheezing and shortness of breath likely.

Hazardous (605+)

Extreme respiratory danger. Significant life risk.

Health & Scientific Resources

→ How to read US EPA Air Quality Index before going outside → Understanding Air Quality Index levels and what they mean → When haze forms and what it does to air quality

How is this AQI calculated?

The primary Air Quality Index (AQI) shown above is calculated using the US EPA Linear Interpolation formula based on PM2.5 concentration (Fine Particulate Matter).

Formula: Ip = [(Ihi - Ilow) / (Chi - Clow)] * (Cp - Clow) + Ilow
Current Conditions Explained

Is the AQI in Laguna safe today?

Today's AQI is 61, which is categorized as Moderate. This means the air quality is moderate for the general population.